The ADM2561E and the pending products within this family (light blue at the top of each page and gray in text) are 3 kV rms signal and power isolated RS-485 transceivers. The devices pass radiated emissions testing to the EN55032 Class B standard with margin on a 2-layer printed circuit board (PCB) using two small external 0402 ferrites on isolated power and ground pins. The device features an integrated, low electromagnetic interference (EMI), isolated dc-to-dc converter, which eliminates the need for an external isolated power supply. The isolation barrier provides immunity to system level electromagnetic compatibility (EMC) standards. The family of isolator devices features ±12 kV contact and ±15 kV air IEC61000-4-2 ESD protection on the RS-485 A, B, Y, and Z pins. The devices also features cable invert pins, allowing the user to quickly correct reversed cable connection on the A, B, Y, and Z bus pins while maintaining full receiver fail-safe performance.
Slew rate limited versions are available, which are optimized for low speed over long cable runs, and have a maximum data rate of 500 kbps. Half duplex and full duplex variants are available. The full duplex generics allow independent cable inversion of the driver and receiver for additional flexibility.
The Pending Products section provides additional preliminary information on the following pending products: ADM2563E, ADM2565E, and ADM2567E (see Table 21). Table 17 shows the summary description of each generic.
ADM2567EAPPLICATIONS
Heating,ventilation, and air conditioning (HVAC) networksIndustrial field buses
Building automation
Utility networks
Energy meters
3 kV rms isolated RS-485/RS-422 transceiver
Low radiated emissions, integrated, isolated dc-to-dc converter
Passes EN55032 Class B with margin on a 2-layer PCB
Cable invert smart feature
Correct reversed cable connection on A, B, Y, and Z bus pins while maintaining full receiver fail-safe feature
ESD protection on RS-485 A, B, Y and Z pins
≥±12 kV IEC61000-4-2 contact discharge
≥±15 kV IEC61000-4-2 air discharge
High speed 25 Mbps data rate (ADM2565E/ADM2567E)
Low speed 500 kbps data rate for EMI control (ADM2561E/ADM2563E)
Flexible power supplies
Input VCC supply of 3 V to 5.5 V
Logic VIO supply of 1.7 V to 5.5 V
VSEL pin to select VISO supply of 5 V (VCC > 4.5 V) or 3.3 V
PROFIBUS compliant for 5 V VISO
Wide operating temperature range: −40°C to +105°C
High common-mode transient immunity: 250 kV/μs
Short-circuit, open-circuit, and floating inputreceiverfail-safe
Supports 196 bus nodes (72 kΩ receiver input impedance)
Full hot swap support (glitch free power-up/power-down)
Safety and regulatory approvals (pending)
CSA Component Acceptance Notice 5A, DIN V VDE V 0884-11, UL 1577, CQC11-471543-2012, IEC 61010-1
28-lead, fine pitch SOIC_W package (10.15 mm × 10.05 mm) with >8.0 mm creepage and clearance
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